Steam-boiler furnace.



I. C. DAKIN. STEAM BOlLER FURNACE.

APPLICATION FILED APR. 1, 1914.

- Patented July 20, 1915.

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l m bweowo v ISAAC CHARLES DJihKIN, WEST IIEWTQN, PENNSYLVANIA.

STEAM-BOILER renames.

amie.

' Application filed April 7',

' clear, and exact description of the invention,

above the walls of the such as will enable others skilled in the art to which it appertains to make and'use the same. This invention relates to steam boiler furnaces, and has-for its object to provide a furnace especially vadapted for heating steam-boilers, which shall struction, durable and efiici'ent in use and an economizer in the'matter of 'fuel.

With this and other objects in view, the invention consists in the novel construction and arrangement of parts as will be hereinafter specifically described, claimed and illustrated in the accompanying drawing, in which, i

Figure 1 represents a longitudinal sectional View through the furnace, showing the boiler in side elevation. Fig. '2 represents a vertical sectional View on the line 22 of Fig. 1,

numeral 5 indicates the furnace, the numerals 6 front walls indicates the supporting members disposed furnace and supportingthe boiler 9. The front Wall. 7 of the furnace is formed with a suitable opening 10 and door closure 11 therefor for supplying fuel to the fire,- and is further provided with Referring to the drawing in detail, the,

side walls of the and 7 the rear and the draft opening 12 having a door 13 cornwith the ashpit- 14: above which are arranged the grate bars 15. The ends of the grate bars 15 are supported on a suitable ledge formed on the bridge wall 16 and a ledge formed upon the front wall 7, the ledges extending between the side walls 5 of the furnace. The bridge wall 16 is provided with a curved recess 17 the upper edge thereof of greater radius than the radius of th boiler 9 and arranged in eccentric spaced relation to the wall of the boiler 9,

inunica tin g flopies of patent may be obtained for'five cent Specification of Letters Patent.

be simple in cornrespectively, and the numeral 8 a each, by addressing the Commissioner v Patented Ju1y20,l915, 1914. Serial No. 830,197.

The lower portion of portion inclosed within the Walls of the furnace is provided with a plurality of integrally formed and radially extending flanges 18 provided with the apertures or perforations 19, the flanges being arranged. on opposite sides of the bridge wall 16 and adapted toretard the heat and deflect the same against the sides of the boiler in its passage from the firepot 20 along the bottomof the'boiler toward the opening 21 in the rear of the furnace for attaining the maximum degree of efliciency of the heat units of the products of combustion.

What I claim is In a device of the class nace, a horizontally disposed boiler in said furnace, bridge wall in said furnace hav ing a substantially semicircular recess formed in the upper end thereof, the radius of said recess being greater than the radius of said boiler, said boiler being-positioned within said recess with the center thereof below the center of said recess, whereby to proide a minimum space between the bottom of said boiler and said bridge wall, the remaining space therebetween increasing proportionately upward around the sides of said boiler, and a plurality of substantially semicircular and radially disposed flanges formed integrally with the exterior surface of the lower portion of said boiler at each side of said bridge wall, said flanges having a plurality of horizontally disposed apertures formed therethrough tdprovide for the more eflicient heating of the flanges. said flanges coiiperating with the recess of said bridge wall. for retarding and directing the products of combustion against the bottom and around the sides of said boiler to thereby attain the maximum degree of elliciency of the heatunits.

In testimony whereof I hare name to this s ecification in the 1 L two subscribing witnesses.

ISAAC GHARldT-S DAKIN.

signed my 'esence of of Patents,

Waehinetcn. D, 3

described, a furthe boiler 9 or that i 

